Ezra 8:17 - Clarke's commentary and critical notes on the Bible

And I sent them with commandment unto Iddo the chief at the place Casiphia, and I told them what they should say unto Iddo, and to his brethren the Nethinims, at the place Casiphia, that they should bring unto us ministers for the house of our God. At the place Casiphia - The most judicious commentators are agreed that by Casiphia, the Caspian mountains, between Media and Hyrcania, are intended; where, probably, the Nethinim were employed in working silver mines: כסף keseph, from which the word comes, signifies silver.